import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/home.vue'
import Welcome from './components/welcome.vue'
import Users from './components/users/user.vue'
// 把路由挂载到vue实例上面
Vue.use(Router)

var router = new Router({
  routes: [
    {path:'/',redirect:'/login'},
    {path:'/login',component:Login},
    {path:'/home',component:Home,redirect:'/welcome',children:[
      {path:'/welcome',component:Welcome},
      {path:'/users',component:Users}
    ]}
  ]
})
// 路由导航守卫 如果没登录就只能访问登录页面
router.beforeEach((to,from,next)=>{
  if(to.path == '/login') return next();
  var tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login');
  next()
})
// 把路由暴露出去
export default router
